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Finding the Fourth Proportional to 390,350.88, 585,074.52 and 179,546.40

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Solution

The fourth proportional to 390,350.88, 585,074.52 and 179,546.40 is: 269,111.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,350.88 : 585,074.52 = 179,546.40 : x
  2. Step 2: Convert to fraction form
    390,350.88/585,074.52 = 179,546.40/x
  3. Step 3: Cross multiply
    390,350.88x = 585,074.52 × 179,546.40
  4. Step 4: Simplify right side
    390,350.88x = 105,048,023,797.73
  5. Step 5: Solve for x
    x = 105,048,023,797.73/390,350.88
  6. Step 6: Final answer
    x = 269,111.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.